gulpfile.js

var gulp = require('gulp');
var sass = require('gulp-sass');
var prefix = require('gulp-autoprefixer');
var browserSync = require('browser-sync');
var reload = browserSync.reload;
var nodemon = require('gulp-nodemon');

gulp.task('sass', function () {
    return gulp.src('scss/*.scss')
        .pipe(sass({outputStyle: 'compressed'}, {errLogToConsole: true}))
        .pipe(prefix("last 2 versions", "> 1%", "ie 8", "Android 2", "Firefox ESR"))
        .pipe(gulp.dest('css'))
        .pipe(reload({stream:true}));
});

gulp.task('browser-sync', ['nodemon'], function() {
    browserSync.init(null, {
        proxy: "localhost:8080"
    });
});

gulp.task('default', ['sass', 'browser-sync'], function () {
    gulp.watch("scss/*.scss", ['sass']);
    gulp.watch(["public/js/**/*.js", "public/*.html"], reload);
});

gulp.task('nodemon', function (cb) {
    return nodemon({script: 'app.js'}).on('start', cb);
});

Nope. "No data received".